| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-lead-based piezoelectric ceramics which improves material strength and voltage resistance properties and is configured to decrease a voltage necessary for driving.SOLUTION: A piezoelectric ceramics contains: a perovskite compound represented by a composition formula (KNa)(NbTa)O(in the formula, 0<x≤1, 0<y<1, 0≤z≤0.5); a sintering additive composed of an oxide containing K, Co, and Ta; and a silver compound. The silver compound is 1.0-4.0 mol% in terms of Ag atoms with respect to a total 100 mol% of Co atoms contained in the perovskite compound and the sintering additive. |
